Air conditioning apparatus



Oct. 20, 1936. w. H. LEINWEBER AIR CONDITIONING APPARATUS Filed March1,-1935 2 Sheets-Sheet 1 m hi1. mu m m INVENTOR. 1

oooooaoooo ouuocoouooau onnooonooao nnoo enaouea William H. LezlnweberBY HIS ATTORNEYS W. H. LEINWEBER AIR CONDITIONING APPARATUS Oct, 20,1936.

2 Sheets-Sheet 2 Filed March 1, 1935 INVENTOR. William fiLeinweber H/JATTORNEY5 Patented Oct. 20, 1936 UNITED STATES PATENT OFFICE AIRCONDITIONING APPARATUS William H. Leinweber, Chicago, 111. ApplicationMarch 1, 1935, Serial bio-8,837

Claims. (01. 261-11) This invention relates to air conditioningapparatus.

It is an object of this invention to provide an improved airconditioning apparatus which is rel- 5 atively simple and inexpensive inconstruction and eflicient in use.

Another object of this invention is to provide an improved device forboth cooling and humidifying the air supply to a room or building.

Other objects will appear hereinafter.

The invention consists in the novel combination and arrangement of partsto be hereinafter described and claimed.

The invention will be best understood by refer- .15 ence to theaccompanying drawings, showing the preferred form of construction and inwhich:

Fig. 1 is a side elevational view of a preferred form of the newapparatus, with parts of the casings thereof broken away, to reveal theoperating parts;

Fig. 2 is a vertical sectional view on line 2-2 in Fig. 1;

Fig. 3 is an end elevational view on line 3-3 in Fig. 2, showing the airdelivery grille embodied in 25 the new apparatus;

Fig. 4 is a top plan view with parts of the casings broken away toreveal the operating parts;

Fig. 5 is a fragmentary end elevational view, on line 5-5 in Fig. 4,showing one of the cooling units embodied in the new apparatus;

Fig. 6 is a fragmentary end elevational view, on line 66 in Fig. 4,showing the fluid pump embodied in the new apparatus; and I Fig. 7 is asectional view on line 'I--I in Fig. 4, showing the humidifying unitembodied in the new apparatus. 7

A preferred form of the new air-conditioning apparatus is shown in thedrawings, is therein generally indicated at I0, and comprises a. casing4 II in which is arranged a tank I2 adapted to contain a supply of iceor other refrigerant.

Arranged in the tank I2 is a cooling coil I3 and attached to this coilI3 at one end thereof is a pipe or conduit I4 in which is arranged afluid 45 force pump I5, which is driven by a motor I6.

Likewise operated by the motor I6 is an air blower II, which ispreferably of the type described and claimed in my co-pendingapplication,'

Ser. No. 747,315; Patent 2,026,689, dated January 50 '7, 1936, thisblower I! being arranged in a housing The housing I8 has an extension I9at one side thereof, and arranged in this extension I9 of the blowerhousing I8 is a cooling coil 20, one end con- 55 volution of thiscooling coil 20 being connected, by

way of a pipe 2|, to the cooling coil I3 which is arranged in thecooling tank I2. Provided in the extension IQ of the blower housing I8is a water chamber or compartment 34 which is provided with a waterinlet 33 and likewise provided in the 5 extension I9 of the blowerhousing I8 is afresh air inlet or grille 35. This inlet or grille 35opens into an air duct 36 which includes a portion 31 which is attachedto the bottom wall of the casing II, this portion 31 of the conduit 36extending 10 parallel to the long axis of the casing I I and having anopen end 38 (Fig. 1).

Leading from the blower housing I8 is an air delivery duct 22, whichopens at its upper end into the casing II, and this casing II isprovided at one end with an air delivery grille 24 which is adapted toopen into a room or building for supplying cooled and humidified airthereto. The casing II is provided witha hinged top 26 (Fig. 2).

Surrounding the air duct 22 at a point between the blower I1 and thecasing II is an humidifying device (Figs. 2 and 7) which includes awater jacket 32 which is provided with a water inlet 28.

Arranged in the water jacket 32 is a perforated drum and arranged withinthis drum 30 is a 25 water-absorbent annular member 21, which may bemade of fabric, felt, or any other suitable water-absorbent material;and arranged inwardly of the water-absorbent member 21 is a perforateddrum 3| (Fig. 2).

Leading from one end convolution of the cooling coil 20 to the pump I5is a pipe 33 in which is provided a suitable drain valve 40.

Operation A supply of ice or other refrigerant may be inserted into thetank I2, by opening the hinged top 26 of the casing I I, and a supply ofcool water may be placed in the cooling chamber 34 and in the waterjacket or chamber 29 of the humidify- 4 ing device (Figs. 2 and 7) byopening the inlets 33 and 28, respectively, thereto, and a supply ofwater or other cooling fluid medium is kept in the fluid circulatingsystem I3-I4-I5-33-20 and 2|.

The motor I6 being set in operation to drive the fluid pump I5, water isforced through the fluid circulating'system I3-I I-I 5--39-2Il and 2Iand passes through the cooling coil I3 wherein it is cooled by the iceor like refrigerant surrounding the coil I3. The thus cooled waterpasses out of the cooling coil I3, by way of the pipe 2|, into thecooling coil 20, and thence returns to the pump I5 by way of the pipe39; and as the thus cooled water is circulated through the cooling coil20,

air is drawn into the extension I!) of the blower housing l8,through theinlet 38, conduit 3|-36 and thence through the fresh air inlet or grille35, and as the air is thus drawn through the conduit 31-36 it is cooledby contact with the bottom wall of the casing II; and as the thus cooledat is drawn through the inlet 35 it isfurther tact with the absorbentmember 21, by reason of the perforated jacket 30 [surrounding theabsorbent' member 21.

The thus humidified and cooled air passes from the air-duct 22 into thecasing H wherein it is further cooled by contact with the cooling tank12, and the thus cooled and humidified air passes from the housing ll,through the grille 24, from which it may be delivered to a room orbuilding.

While I have illustrated and described the preferred form ofconstruction for carrying my invention into effect, this is capable ofvariation and modification, without departing from the spirit of theinvention. I, therefore, do not wish to be limited to the precisedetails of construction set forth, but desire to avail myself of suchvariations and modifications as come withinthe scope of the appendedclaims.

Having thus described. my invention what I claim as new and desire toPatentis:

1. An air conditioning apparatus, comprising: a casing having an airdelivery grille in one wall thereof for delivering conditioned air to aroom or building; a. cooling tank in said casing; a blower housinghaving afresh'air inlet; a blower protect by Letters in said housing; asystem for circulating a cooling fluid including a cooling coil arrangedin said cooling tank and a cooling coil in the said fresh air inlet tosaid blower housing; means for circulating a cooling fluid through saidsystem including a fluid pump arranged therein and a motor operatingboth said pump and said blower; an air delivery duct extending from saidblower housing into said casing and an air duct for supplying fresh airto the said fresh air inlet of said blower housing and including aportion extending exteriorly of said blower housing above the. latterand in contact-with a wall of said casing.

2. An air conditioning apparatus, comprising: a casing having anairdelivery grille in one wall thereof fordelivering conditioned air toa room or building; a cooling tank in said casing; a blowerl ousinghaving a fresh air inlet; a blower in said housing; a system forcirculating a 'cooling fluid including a cooling coil arranged-in saidcooling tank and'a cooling coil in the said fresh air inlet to saidblower housing; means for circulating a cooling fluid through saidsystem including a fluid pump arranged therein and a motor operatingboth said pump and said blower;

an air delivery duct extending from said blower housing into saidcasing; a device arranged in said air duct for humidifying cooled airpassing therethrough and an air duct for supplying fresh air to the saidfresh air inlet or said blower including a portion extending exteriorlyof said blower housing above the latter a'ndin contact with the bottomwall of said casing.

3. An air conditioning apparatus, comprising: a casing having an airdelivery grille in one wall thereof for delivering conditioned air to aroom or building; a cooling tank in said casing; a blower housing havinga freshair inlet; a blower in said housing; a system for circulating acooling fluid including a cooling coil arranged in said cooling tank anda cooling coil in the said fresh air inlet to said blower housing; meansfor circulating a cooling fluid through said system including a fluidpump arranged therein and a motor operating said casing; and a devicearranged in said air duct for humidifying cooled air passingtherethrough; saidhumidifying device including a water jacketsurrounding said air duct and having a perforated inner wall; aperforated drum arranged in 'said air duct; and a. water-absorbentmember arranged between said perforated drum and the said perforatedinner wall of said water jacket.

4. An air conditioning apparatus, comprising: a casing having an airdelivery grille in one wall thereof for delivering conditioned air to .aroom or building; a cooling tank in said casing; a blower housing havinga fresh air inlet; a blower in said housing; a system for circulating acooling fluid including a cooling coil arranged in said cooling tank anda cooling coil arranged in said fresh air inlet to said blower housing;means for circulating a cooling fluid through said system including afluid pump arranged therein; an air delivery duct extending from saidblower housing into said casing and an air duct for supplying fresh airto the said fresh air inlet of said blower housing including a portionextending exteriorly' of said blower housing above the latter and incontact with a wall of the said casing.

5, An air conditioning apparatus, comprising: a casing having an airdelivery grille in one wall thereof for delivering conditioned air to aroom or building; a cooling tank in said casing; a blower housinghaving'a fresh air inlet; a blower in said housing; a system forcirculating a cooling fluid including a cooling coil arranged in saidcooling tank and a cooling coil in .the said fresh air inlet to saidblower'housing; a fresh air duct leading from the said air inlet to saidblower housing and extending along said casing in contact with thebottom wall of the latter; and. an

both said pump and said blower; an air delivery duct extending from saidblower housing into

